Protective casing for electrical devices



FIG. 1 is a front, right perspective view of a protective casing for electrical devices showing my new design;

FIG. 2 is a rear, left view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The top view is a mirror image of the bottom view. 

CLAIM The ornamental design for a protective casing for electrical devices, as shown and described. 